If there is in fact no God no Entity outside our minds to validate the idea even atheists have of God then all theology, all belief, all religion is a delusion. Whichever conclusion you've come to, did it ever occur to you that you might be wrong? What validates opinions? What intrusions from propaganda systems skew our ideas of the value of anything especially values that defy dollar signs, like love, honor, soul, hope, God? Faith in God (or anything else) is definitely NOT a "blind leap in the dark," which would be foolish. Then what justifies it? What objective evidence argues that there is a much higher probability of a regulatory Mind Behind It All than that there isn't? Come and see.
Here is a best seller that tackles the "God problem" in terms that high school students can understand in their language and from the perspective of their culture. Witty, provocative and thoughtful, this book has been extremely successful as well in adult education programs.
O'Malley, William J.